using Elwig.Helpers.Weighing;

namespace Tests.WeighingTests {
    [TestFixture]
    class ScaleTestMatzen {

        private MockScale? Mock;
        private SystecScale? Scale;

        private static (string, bool) ScaleHandler(string req, int weight, string? error, int identNr) {
            bool incr = false;
            if (!req.StartsWith('<') || !req.EndsWith('>'))
                return ("<31>\r\n", incr);
            req = req[1..^1];

            if (req.Length > 3) {
                return ("<32>\r\n", incr);
            } else if (req.StartsWith("RN")) {
                incr = true;
            } else if (req.StartsWith("RM")) {
                incr = false;
            } else {
                return ("<32>\r\n", incr);
            }

            var modes = error?.Split(';') ?? [];
            if (weight == 0) {
                incr = false;
            }

            bool moving = modes.Contains("moving");
            string data = $"00{(moving ? 1 : 0)}0{DateTime.Now:dd.MM.yyHH:mm}{(incr ? identNr : 0),4}1{weight,8}{0,8}{weight,8}kg   {1,3}";
            return ($"<{data}{Elwig.Helpers.Utils.CalcCrc16Modbus(data),8}>\r\n", incr);
        }

        [OneTimeSetUp]
        public void SetupScale() {
            Mock = new CommandMockScale(12345, ScaleHandler);
            Scale = new("1", "IT3000A", "tcp://127.0.0.1:12345");
        }

        [OneTimeTearDown]
        public void TeardownScale() {
            Mock?.Dispose();
            Scale?.Dispose();
        }

        [SetUp]
        public void ResetScale() {
            Mock!.IdentNr = 0;
            Mock!.Weight = 0;
            Mock!.Error = null;
        }

        [Test]
        public async Task Test_01_CurrentWeight() {
            Mock!.Weight = 1234;
            Assert.That(await Scale!.GetCurrentWeight(), Is.EqualTo(new WeighingResult {
                Weight = 1234, Date = Utils.Today, Time = Utils.Time,
            }));
            Mock!.Weight = 1235;
            Assert.That(await Scale!.GetCurrentWeight(), Is.EqualTo(new WeighingResult {
                Weight = 1235, Date = Utils.Today, Time = Utils.Time,
            }));
            Mock!.Weight = 1236;
            Assert.That(await Scale!.GetCurrentWeight(), Is.EqualTo(new WeighingResult {
                Weight = 1236, Date = Utils.Today, Time = Utils.Time,
            }));
        }

        [Test]
        public async Task Test_02_Normal() {
            Mock!.Weight = 1234;
            Assert.That(await Scale!.Weigh(), Is.EqualTo(new WeighingResult {
                Weight = 1234, WeighingId = "1",
                FullWeighingId = $"{DateTime.Today:yyyy-MM-dd}/1",
                Date = Utils.Today, Time = Utils.Time,
            }));
            Mock!.Weight = 3333;
            Assert.That(await Scale!.Weigh(), Is.EqualTo(new WeighingResult {
                Weight = 3333, WeighingId = "2",
                FullWeighingId = $"{DateTime.Today:yyyy-MM-dd}/2",
                Date = Utils.Today, Time = Utils.Time,
            }));
            Mock!.Weight = 4321;
            Assert.That(await Scale!.Weigh(), Is.EqualTo(new WeighingResult {
                Weight = 4321, WeighingId = "3",
                FullWeighingId = $"{DateTime.Today:yyyy-MM-dd}/3",
                Date = Utils.Today, Time = Utils.Time,
            }));
        }
    }
}